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Experimenters injected a growth hormone gene into thousands of carp eggs. Of the 215 carp that grew from these eggs, 30 incorporated the gene into their DNA (Science News, May 20, 1989). With a confidence of 95%, what is the margin of error for the proportion of all carp that would incorporate the gene into their DNA?

1) 0.0011

2) 0.0032

3) 0.0388

4) 0.0236

5) 0.0463

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